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https://doi.org/10.17559/TV-20190228065832

Research on Fatigue Damage and Affecting Factors of Defected Rock Mass Based on Ultrasonic Wave Velocity

Run Li ; Engineering College, Fujian Jiangxia University, No. 2 Xiyuangong Road, University Town Fuzhou, Fujian 350108, China
Yasi Wang ; Engineering College, Fujian Jiangxia University, No. 2 Xiyuangong Road, University Town Fuzhou, Fujian 350108, China
Fengfei Fu ; Engineering College, Fujian Jiangxia University, No. 2 Xiyuangong Road, University Town Fuzhou, Fujian 350108, China

Puni tekst: engleski, pdf (2 MB) str. 1061-1067 preuzimanja: 342* citiraj
APA 6th Edition
Li, R., Wang, Y. i Fu, F. (2019). Research on Fatigue Damage and Affecting Factors of Defected Rock Mass Based on Ultrasonic Wave Velocity. Tehnički vjesnik, 26 (4), 1061-1067. https://doi.org/10.17559/TV-20190228065832
MLA 8th Edition
Li, Run, et al. "Research on Fatigue Damage and Affecting Factors of Defected Rock Mass Based on Ultrasonic Wave Velocity." Tehnički vjesnik, vol. 26, br. 4, 2019, str. 1061-1067. https://doi.org/10.17559/TV-20190228065832. Citirano 18.06.2021.
Chicago 17th Edition
Li, Run, Yasi Wang i Fengfei Fu. "Research on Fatigue Damage and Affecting Factors of Defected Rock Mass Based on Ultrasonic Wave Velocity." Tehnički vjesnik 26, br. 4 (2019): 1061-1067. https://doi.org/10.17559/TV-20190228065832
Harvard
Li, R., Wang, Y., i Fu, F. (2019). 'Research on Fatigue Damage and Affecting Factors of Defected Rock Mass Based on Ultrasonic Wave Velocity', Tehnički vjesnik, 26(4), str. 1061-1067. https://doi.org/10.17559/TV-20190228065832
Vancouver
Li R, Wang Y, Fu F. Research on Fatigue Damage and Affecting Factors of Defected Rock Mass Based on Ultrasonic Wave Velocity. Tehnički vjesnik [Internet]. 2019 [pristupljeno 18.06.2021.];26(4):1061-1067. https://doi.org/10.17559/TV-20190228065832
IEEE
R. Li, Y. Wang i F. Fu, "Research on Fatigue Damage and Affecting Factors of Defected Rock Mass Based on Ultrasonic Wave Velocity", Tehnički vjesnik, vol.26, br. 4, str. 1061-1067, 2019. [Online]. https://doi.org/10.17559/TV-20190228065832

Sažetak
In this paper the fatigue-loading test of defected rock-like specimen has been carried out by electro-hydraulic servo fatigue testing machine. At the same time, the ultrasonic data has been collected and analyzed by the digital ultrasonic instrument. The fatigue damage and influencing factors of the defective rock mass under dynamic load are studied. According to the experimental research and analysis, this paper chooses to define the damage variable by ultrasonic velocity, and the inverse function of the Logistic equation was used to describe the evolution curve of fatigue damage sample. The experimental data fitting results show that the damage model and the experimental data fit well. In addition, this paper analyzes the main influencing factors of fatigue damage in the test. The initial damage represents the damage state before the sample is cyclically loaded. Different initial damages have a significant effect on the fatigue life of the sample. In the case the initial damage is substantially the same, the upper limit stress is larger, the fatigue life of the sample is shorter, and conversely, the fatigue life is longer.

Ključne riječi
affecting factors; defected rock; dynamic loading; fatigue damage; ultrasonic wave velocity

Hrčak ID: 223302

URI
https://hrcak.srce.hr/223302

Posjeta: 567 *